Male & Female Reproductive System

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Transcript of Male & Female Reproductive System

UterusUterus is the Latin word for womb.the uterus contains some of the strongest muscles in the female body. These muscles are able to expand and contract to accommodate a growing fetus and then help push the baby out during labor.CervixIt forms a barrier between the uterus and the vagina.Until birth, the baby is held in place by the cervix. During birth, the cervix expands and the baby passes through it.It is a muscular, hollow tube that extends from the vaginal opening to the uterus. The vagina is about 3 to 5 inches long in a grown woman. Because it has muscular walls, it can expand and contract.It has membranes that keep it moist and protected.

UrethraIn males, it has the additional function. It expels semen when the man reaches orgasm.

When the penis is erect during sex, the flow of urine is blocked from the urethra, allowing only semen to be ejaculated at orgasm.REPRODUCTIVE SYSTEMIn the human reproductive process, two kinds of sex cells are involved. The and the egg or ovum, meet in the female's reproductive system. Both the male and female reproductive systems are essential for reproduction. The female needs a male to fertilize her egg.Male & Female Reproductive SystemFEMALE REPRODUCTIVE SYTEMVaginaFunction:It's the pathway that a baby takes out of a woman's body during childbirth, called the birth canal.It provides the route for the menstrual blood (the period) to leave the body from the uterus.Ovaries

They produce, store, and release eggs into the fallopian tubes in the process called ovulation. Each ovary measures about 1½ to 2 inchesFallopian TubesAlso known as oviduct, is the vessel through which egg cell travels to the uterus.

There are very tiny hairs in the fallopian tube called cilia, which aids in the smooth passage of the mature egg to the uterus.

Within each tube is a tiny passageway no wider than a sewing needle.The endometrium is the mucous membrane that lines the inside of the uterus (womb).

It becomes thick and rich with blood vessels to prepare for pregnancy. If the woman does not get pregnant, part of the endometrium is shed, causing menstrual bleeding.EndometriumMALE REPRODUCTIVE SYSTEMSourceshttp://www.eschooltoday.com/human-reproduction/the-female-reproductive-organ.html

http://www.britannica.com/science/ejaculatory-ductEXTERNAL MALE REPRODUCTIVE COMPONENTSPenisThe penis is the male organ for sexual intercourse. It has three parts: the root, which attaches to the wall of the abdomenthe shaftthe glans, which also is called the head of the penis, is covered with a loose layer of skin called foreskin.

The opening of the urethra, the tube that transports semen and urine, is at the tip of the glans penis. The penis also contains a number of sensitive nerve endings.ScrotumIt is the protective sac of the testes or testicles.

It hangs outside the body, which is 1 to 3 degrees Celcius lower than the internal body temperature, making it ideal for sperm reproduction.TesticlesThe testes are responsible for making testosterone, the primary male sex hormone, and for generating sperm.

Within the testes are coiled masses of tubes called seminiferous tubules, where sperm cells are produced through a process called spermatogenesis.A tube that rests on the backside of each testicle.

The job of the epididymis is to bring the sperm to maturity, since the sperm that emerged from the testes are immature and incapable of fertilization.

When the sperm cells are matured enough, it travels to another tube called vas deferens.EpididymisINTERNAL REPRODUCTIVE COMPONENTSProstate GlandThe prostate gland contributes additional fluid to the ejaculate. Prostate fluids also help to nourish the sperm. Bulbourethral GlandsIt secretes alkaline fluid used for lubricating and neutralizing traces of urine in the urethra.Ejaculatory DuctsThe ducts function to mix the sperm with fluids secreted by the seminal vesicles and to transport these substances to the prostate.Seminal VesiclesThe seminal vesicles are sac-like pouches that attach to the vas deferens near the base of the bladder.

It secretes fluid rich in sugar (fructose) that sperm cells use for energy and to move. The fluid of the seminal vesicles makes up most of the volume of a man’s ejaculatory fluid.are pea-sized structures located on the sides of the urethra just below the prostate gland.